12681963 has 24 divisors (see below), whose sum is σ = 21385728. Its totient is φ = 7090992.

The previous prime is 12681959. The next prime is 12682001. The reversal of 12681963 is 36918621.

It is not a de Polignac number, because 12681963 - 2² = 12681959 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12682963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 820 + ... + 5102.

It is an arithmetic number, because the mean of its divisors is an integer number (891072).

Almost surely, 2^12681963 is an apocalyptic number.

12681963 is a deficient number, since it is larger than the sum of its proper divisors (8703765).

12681963 is a wasteful number, since it uses less digits than its factorization.

12681963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4343 (or 4340 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 12681963 is about 3561.1743849466. The cubic root of 12681963 is about 233.2001509806.

The spelling of 12681963 in words is "twelve million, six hundred eighty-one thousand, nine hundred sixty-three".